Our stay at The Arni is great! the place is near to street foods, convenience stores. With regards to BTS station (punnawithi) it'll take you around 10 mins to get there by walking or you can take the scooter (10 baht I think) but it didn't matter to us. The staff there even the security guard is so courteous. We didn't had any problems during our stay, the room is great, all appliances are working and even though we didn't had the chance to meet Tib, she assured us that she's only 1 message away and she's very responsive to our queries. Did I mention that she even booked us a taxi a day before our check-out? How cool is that? Highly recommended guys.